Multnomah County Weather Forecast
Multnomah County weather: 64°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Snow forecast for Multnomah County
No snow is in the current forecast window for Multnomah County.
0 of the next 16 nights are forecast to reach freezing.
Average monthly lows here stay above freezing all year, so lying snow is rare.
16-day forecast for Multnomah County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sat, Aug 22 | ☁️ Overcast | 76° / 57° | 2% | 10 mph | 7 |
| Sun, Aug 23 | ☁️ Overcast | 81° / 61° | 5% | 9 mph | 7 |
| Mon, Aug 24 | ☁️ Overcast | 90° / 58° | 0% | 8 mph | 7 |
| Tue, Aug 25 | ☁️ Overcast | 94° / 64° | 1% | 5 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 84° / 63° | 12% | 6 mph | 6 |
| Thu, Aug 27 | ⛅ Partly cloudy | 84° / 62° | 3% | 8 mph | 6 |
| Fri, Aug 28 | ☁️ Overcast | 82° / 62° | 2% | 11 mph | 6 |
| Sat, Aug 29 | ☁️ Overcast | 78° / 60° | 6% | 9 mph | 6 |
| Sun, Aug 30 | ☀️ Clear sky | 81° / 56° | 9% | 8 mph | 6 |
| Mon, Aug 31 | ☁️ Overcast | 69° / 59° | 22% | 8 mph | 4 |
| Tue, Sep 1 | ⛅ Partly cloudy | 82° / 53° | 17% | 9 mph | 6 |
| Wed, Sep 2 | ☀️ Clear sky | 87° / 56° | 14% | 9 mph | 6 |
| Thu, Sep 3 | ☁️ Overcast | 82° / 59° | 16% | 10 mph | 6 |
| Fri, Sep 4 | ☁️ Overcast | 70° / 56° | 15% | 7 mph | 4 |
| Sat, Sep 5 | ☁️ Overcast | 72° / 56° | 19% | 6 mph | 5 |
| Sun, Sep 6 | ☀️ Clear sky | -- / -- | 20% | -- | — |
Climate in Multnomah County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 46° | 34° | 6,9 in | ★★☆☆☆ |
| February | 49° | 37° | 6,7 in | ★★☆☆☆ |
| March | 55° | 40° | 6,5 in | ★★☆☆☆ |
| April | 61° | 43° | 3,0 in | ★★★★☆ |
| May | 68° | 48° | 2,5 in | ★★★★☆ |
| June | 75° | 54° | 2,0 in | ★★★★☆ |
| July | 84° | 59° | 0,3 in | ★★★★★ |
| August | 84° | 60° | 0,6 in | ★★★★★ |
| September | 76° | 55° | 2,0 in | ★★★★☆ |
| October | 62° | 47° | 5,9 in | ★★★☆☆ |
| November | 52° | 42° | 8,6 in | ★★☆☆☆ |
| December | 49° | 41° | 10,8 in | ★☆☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, November and December - historically the least comfortable months here.
See the Multnomah County forecast by time range
Multnomah County weather - more answers
Explore Multnomah County
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Frequently asked questions
Where is Multnomah County?
Multnomah County is a county in Oregon. Its coordinates are 45.5152, -122.6784. It lies in North America.
What is the weather like in Multnomah County right now?
It is currently 64°F (18°C) with clear. Humidity is 88% and wind is 7 mph.
When is the best time to visit Multnomah County?
June, July and August offer the most comfortable conditions in Multnomah County, which has a temperate climate. January, November and December are usually the hardest months for outdoor plans.
What time zone is Multnomah County in?
Multnomah County observes America/Los_Angeles (UTC-07:00). The local time is 12:00 AM.
How many people live in Multnomah County?
Multnomah County has a population of approximately 800.000.
What is the nearest airport to Multnomah County?
The closest airports are Portland International Airport (PDX), 7 mi away, Seattle-Tacoma International Airport (SEA), 135 mi away and Vancouver International Airport (YVR), 255 mi away.
What are the top things to do in Multnomah County?
Popular options include Columbia River, Silver Falls State Park, Mount Hood, Cannon Beach, Mount Rainier and Mount Rainier National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 at 12:00 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
